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feat: Phase 19-C/D - sprite loading, transparency, and animation

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- Add runtime sprite loading from Characters.png and Environment.png
- Implement ProcessTransparency for chroma-key white background removal
- Add AgentAnimator for procedural idle/movement animations
- Add Billboard component support for 2.5D perspective
- Normalize sprite scales based on world units
- Fix SetMovement parameter mismatch

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
empty
2026-01-02 00:23:13 +08:00
parent 01abd3c2dc
commit 0187c5ecbe
4 changed files with 246 additions and 46 deletions
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105
unity-client/Assets/Scripts/AgentVisual.cs
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@@ -115,45 +115,77 @@ namespace TheIsland.Visual
{
if (!IsAlive) return;
// Phase 19-D: Apply soft-repulsion to prevent crowding
Vector3 repulsion = CalculateRepulsion();
// Handle Movement
if (_isMoving)
{
transform.position = Vector3.MoveTowards(transform.position, _targetPosition, _moveSpeed * Time.deltaTime);
// Simple steering toward target
Vector3 moveDir = (_targetPosition - transform.position).normalized;
Vector3 finalVelocity = (moveDir * _moveSpeed) + repulsion;
transform.position += finalVelocity * Time.deltaTime;
// Flip sprite based on direction
if (_spriteRenderer != null)
if (_spriteRenderer != null && Mathf.Abs(moveDir.x) > 0.01f)
{
float dx = _targetPosition.x - transform.position.x;
if (Mathf.Abs(dx) > 0.1f)
{
// FlipX = true means face Left (assuming sprite faces Right by default)
// If sprite faces Front, we might need a different approach, but FlipX is standard for 2D.
_spriteRenderer.flipX = dx < 0;
}
_spriteRenderer.flipX = moveDir.x < 0;
}
if (Vector3.Distance(transform.position, _targetPosition) < 0.05f)
if (Vector3.Distance(transform.position, _targetPosition) < 0.1f)
{
_isMoving = false;
}
}
if (_isMoving)
else if (repulsion.sqrMagnitude > 0.001f)
{
MoveTowardsTarget();
// Push away even when idle
transform.position += repulsion * Time.deltaTime;
}
// Phase 19-B: Use AgentAnimator for procedural movement/idle
// Phase 19-D: Dynamic Z-Sorting
if (_spriteRenderer != null)
{
// In world space, higher Z (further) should have lower sorting order
// Z typically ranges from -10 to 10 on the island
_spriteRenderer.sortingOrder = Mathf.RoundToInt(-transform.position.z * 100);
}
// Phase 19-B/D: Use AgentAnimator
if (_animator != null)
{
float velocity = _isMoving ? _moveSpeed : 0;
_animator.SetMovement(velocity, _moveSpeed);
float currentSpeed = _isMoving ? _moveSpeed : 0;
_animator.SetMovement(currentSpeed, _moveSpeed);
}
// Phase 19: Smooth UI Bar Transitions
UpdateSmoothBars();
}
private Vector3 CalculateRepulsion()
{
Vector3 force = Vector3.zero;
float radius = 1.2f; // Social distancing radius
float strength = 1.5f;
var allAgents = FindObjectsByType<AgentVisual>(FindObjectsSortMode.None);
foreach (var other in allAgents)
{
if (other == this || !other.IsAlive) continue;
Vector3 diff = transform.position - other.transform.position;
float dist = diff.magnitude;
if (dist < radius && dist > 0.01f)
{
// Linear falloff repulsion
force += diff.normalized * (1.0f - (dist / radius)) * strength;
}
}
return force;
}
private void UpdateSmoothBars()
{
float lerpSpeed = 5f * Time.deltaTime;
@@ -288,11 +320,11 @@ namespace TheIsland.Visual
if (!System.IO.File.Exists(path)) yield break;
byte[] fileData = System.IO.File.ReadAllBytes(path);
Texture2D tex = new Texture2D(2, 2);
tex.LoadImage(fileData);
Texture2D sourceTex = new Texture2D(2, 2);
sourceTex.LoadImage(fileData);
// Phase 19-B: Fix white background transparency
ProcessTransparency(tex);
// Phase 19-C: Fix black/white background with robust transcoding
Texture2D tex = ProcessTransparency(sourceTex);
// Slice the 1x3 collection (3 characters in a row)
int charIndex = id % 3;
@@ -304,23 +336,44 @@ namespace TheIsland.Visual
{
_spriteRenderer.sprite = characterSprite;
_spriteRenderer.color = Color.white;
// Phase 19-C: Normalize scale. Target height approx 2.0 units.
float spriteHeightUnits = characterSprite.rect.height / characterSprite.pixelsPerUnit;
float normScale = 2.0f / spriteHeightUnits; // Desired height is 2.0 units
_spriteRenderer.transform.localScale = new Vector3(normScale, normScale, 1);
// Update original scale for animator
_originalSpriteScale = _spriteRenderer.transform.localScale;
}
}
private void ProcessTransparency(Texture2D tex)
private Texture2D ProcessTransparency(Texture2D source)
{
if (tex == null) return;
Color[] pixels = tex.GetPixels();
if (source == null) return null;
// Create a new texture with Alpha channel
Texture2D tex = new Texture2D(source.width, source.height, TextureFormat.RGBA32, false);
Color[] pixels = source.GetPixels();
for (int i = 0; i < pixels.Length; i++)
{
// If the pixel is very close to white, make it transparent
if (pixels[i].r > 0.95f && pixels[i].g > 0.95f && pixels[i].b > 0.95f)
Color p = pixels[i];
// Chroma-key: If pixel is very close to white, make it transparent
// Using 0.9f as threshold to catch almost-white artifacts
if (p.r > 0.9f && p.g > 0.9f && p.b > 0.9f)
{
pixels[i] = Color.clear;
pixels[i] = new Color(0, 0, 0, 0);
}
else
{
// Ensure full opacity for others
pixels[i] = new Color(p.r, p.g, p.b, 1.0f);
}
}
tex.SetPixels(pixels);
tex.Apply();
return tex;
}
private void ApplyAgentColor(int agentId)